<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/Breadcrumb' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item >数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 为 ECharts 准备一个定义了宽高的 DOM -->
            <div id="main" style="width: 750px;height:400px;"></div>
        </el-card>
    </div>
</template>
<script>
//1.导入 echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
            options: {
                    title: {
                        text: '用户来源'
                    },
                    tooltip: {
                        trigger: 'axis',
                        axisPointer: {
                        type: 'cross',
                        label: {
                            backgroundColor: '#E9EEF3'
                        }
                        }
                    },
                    grid: {
                        left: '3%',
                        right: '4%',
                        bottom: '3%',
                        containLabel: true
                    },
                    xAxis: [
                        {
                        boundaryGap: false
                        }
                    ],
                    yAxis: [
                        {
                        type: 'value'
                        }
                    ]
            }
        }
    },
    created() {
        
    },
    //此时页面上的元素已经渲染完毕了
    async mounted() {
        // 3.基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

        const {data : res} = await this.$http.get('reports/type/1')
        if( res.meta.status !== 200){
            return this.$message.error(res.meta.msg)
        }

        // 4. 准备数据和配置项
        const result = _.merge(res.data,this.options)

        // 5. 展示数据
        myChart.setOption(result);
    },
    methods: {
        
    },

}
</script>
<style lang="less" scoped>

</style>